Chelsea should work with the defenders they have now and forget buying more, let them build the connection/communication among themselves instead of adding and then lack level of commitment, loosing the ball at critical points will only send the team down the table.
Well, I'm a person who thinks that Chelsea should do Something to be able to go further in the Premier League. I say one thing: they have to change everything that is necessary, and it's not a question of luck, it's a question of attitude. They have changed everything that can be changed , Think that now they have to adapt to everything that the Premier League means, because things will start to work out for them, but they have to work very hard, because they have a very difficult path ahead of them with Man City, with Liverpool , with all these teams that are Aways number 1.